I have my motherboard set to use devices as AHCI, and all my SATA drives show up under the Safely Remove icon in Windows 10. Since I rarely need to remove the boot SSD while I’m actively using the computer, I don’t want to see it or any of the other internal drives in that menu.
Run RegEdit and navigate to:
Add a new Multi String Value called TreatAsInternalPort set the value like so (I have 8 internal drives I want to hide, so 0-7):
0 1 2 4 5 6 7
(note the newlines after each number, including the last one)
Found here: http://superuser.com/questions/12955/how-can-i-remove-the-option-to-eject-sata-drives-from-the-windows-7-tray-icon/961242#961242